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View ChartPolkadot is a blockchain project focused on creating a platform on which other blockchain-based projects and applications can be built. It has become one of the most successful projects working to improve the fundamental technology that powers decentralized applications (dApps).
Polkadot was founded by Gavin Wood, a co-founder of Ethereum and the creator of the Solidity programming language, who published the Polkadot white paper in 2016. The project's co-founders are Robert Habermeier and Peter Czaban. The Web3 Foundation, a non-profit organisation based in Zug, Switzerland, was established in 2017 and managed the network during its early phase.
DOT has a maximum supply cap of 2.1 billion tokens, which was activated through an on-chain governance vote on 14 March 2026. The current circulating supply is approximately 1.7 billion DOT.
There are thousands of cryptocurrencies across the ecosystem, a vast majority of which can’t communicate with each other. For example, users can’t send their Dogecoin over Chainlink, or vice versa. Polkadot aims to fix that by building a framework that interconnects blockchains, even if each chain performs different functions to one another.
At the center of Polkadot sits the “relay chain,” a central blockchain that connects all other participating blockchains together. The relay chain processes all transactions taking place in the ecosystem at the same time, with the goal of improving scalability.
User-created blockchains that hook into the relay chain are known as “parachains.” By allowing blockchains to communicate with its platform, Polkadot is able to connect many blockchains in a way that wasn’t possible before. Parachains benefit from three key properties: sovereignty, meaning individual blockchains are sovereign in the way they conduct themselves; shared security, whereby the relay chain provides cryptoeconomic security to parachains without each chain needing to run its own validator set; and interoperability, achieved through a common data exchange standard called XCM.
Polkadot relies on Nominated Proof-of-Stake (NPoS), a consensus mechanism under which token holders nominate validators to secure the network and process transactions. The mainnet launched in May 2020 under a proof-of-authority consensus model managed by the Web3 Foundation, and by June 2020 the network transitioned to NPoS.
The DOT token serves three clear purposes: staking for operations and security, facilitating network governance, and bonding tokens to connect parachains.
Polkadot is attempting to lay the groundwork for a variety of applications. On 15 September 2025, Polkadot set a 2.1 billion DOT cap to reshape its tokenomics, introducing scarcity. The hard cap was activated on 14 March 2026 through an on-chain governance vote, replacing the previous uncapped inflationary model that minted roughly 120 million new DOT per year. Annual issuance was reduced by 53.6% to approximately 57 million DOT per year, cutting token inflation from approximately 7–10% to roughly 3.1%. Referendum 1710 (“Hard Pressure”) is cited as the driver of the cap and stepped issuance.
On 6 March 2026, the 21Shares Polkadot Trust (TDOT) launched on Nasdaq as the first US-listed spot Polkadot exchange-traded product, holding physical DOT with Coinbase as custodian. The fund charges a 0.30% management fee, reduced to 0.09% through October 2026.
On 19 March 2026, an SEC/CFTC interpretation named Polkadot (DOT) as a digital commodity, outlining how tokens are treated under U.S. securities laws.
However, Polkadot may not become the go-to platform for developing blockchain-based applications, particularly given that Ethereum is releasing its own improvements that address many of the same issues. However, the combination of the Polkadot SDK and the fundamental technical benefits could attract a lot of development.
Investing in DOT carries risks, including price volatility, changes in regulatory policy, and technical risks associated with the network and its development. These factors should be considered before making any investment decision.
DOT can be bought or sold on major cryptocurrency exchanges. To purchase DOT, you typically need to register an account and complete identity verification, as a regulated exchange or payment provider must verify identity before it can pay out cash. DOT is currently trading on 1070 active markets.
Once acquired, DOT can be used for staking and governance. Unstaking starts a 28-day unbonding period, and leaving a nomination pool unbonds too; only after it ends can you send or sell the DOT. An account that drops below the minimum of 0.01 DOT (as of October 2026) is closed and the rest is removed, so either send your whole balance or leave at least 0.01 DOT behind.
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Trade| Comparison Dimension | Polkadot (DOT) | Ethereum (ETH + Layer 2) | Cosmos (ATOM) |
|---|---|---|---|
| Shared Security | Strong native sharing (Relay Chain secures all parachains) | No native sharing (L2s settle on L1; L1s remain isolated) | Optional sharing (Opt-in ICS; Zones run their own validators by default) |
| Cross-Chain Communication | XCM (Cross-Consensus Messaging) | Relies on third-party bridges | IBC (Inter-Blockchain Communication) |
| Architectural Flexibility | Substrate framework, highly customisable Layer 1 | EVM-compatible, focused on Layer 2 scaling | Cosmos SDK, independent sovereign AppChains |
| Resource Allocation Model | Agile Coretime (Purchase compute cores on-demand or monthly) | Gas fees (Paid in ETH) | Independent gas fees and validator costs per chain |
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